Trojan:A trojan (or Trojan horse) is a small malicious program that pretends to have a particular function, but that only shows its real purpose after execution and that purpose is often destructive. Trojans cannot multiply themselves, which differentiates them from viruses and worms.
Trojan.FakeXPA is a malicious parasite, solely designed in order to disrupt and damage the computer activity of any system it has infiltrated under false or deceptive means. By altering your security software to allow for bigger vulnerabilities, Trojan.FakeXPA also allows unauthorized users remote access to your PC.
Technical details (How to remove Trojan.FakeXPA(pop up))